Android Application Development

Transcription

1 Android Application Development (upto Android 4.4) Black Book TM Kogent Learning Solutions Inc. Published by:

2 Copyright 2014 by Dreamtech Press, 19-A, Ansari Road, Daryaganj, New Delhi Black Book is a trademark of Paraglyph Press Inc., 2246 E. Myrtle Avenue, Phoenix Arizona 85202, USA exclusively licensed in Indian, Asian and African continent to Dreamtech Press, India. This book may not be duplicated in any way without the express written consent of the publisher, except in the form of brief excerpts or quotations for the purposes of review. The information contained herein is for the personal use of the reader and may not be incorporated in any commercial programs, rams, other books, databases, or any kind of software without written consent of the publisher. Making copies of this book or any portion for any purpose other than your own is a violation of copyright laws. Limits of Liability/disclaimer laimer of Warranty: The author and publisher have used their best efforts in preparing ring this book. The author make no representation or warranties with respect to the accuracy acy or completeness ess of the contents of this book, and specifically disclaim any implied ied warranties of merchantability or fitness of any particular purpose. There are no warranties which extend end beyond the descriptions contained in this paragraph. No warranty may be created or extended by sales representatives or written sales materials. The accuracy cy and completeness of the information provided herein and the opinions stated herein ein are not guaranteed or warranted to produce any particulars results, and the advice and strategies contained herein may not be suitable for every individual. Neither Dreamtech Press nor author shall be liable for any loss of profit or any other commercial cial damages, including but not limited to special, incidental, consequential, or other damages. Trademarks: All brand names and product names used in this book are trademarks, registered trademarks, or trade names of their respective holders. Dreamtech Press is not associated with any product or vendor mentioned in this book. ISBN: Edition: 2014 Printed at: Himal Impressions, Delhi

3 Dedication I would like to dedicate this book to my parents Mr Radha Krishan Kothari and Mrs Vijay Laxmi, without whom my life would not have any meaning. Thank you so much for all your unconditional support, love, and education. Everything I am, I owe to my parents. DREAM M TECH

4 About the Author Pradeep Kothari holds the B.E. degree in Electronics and Communication and has about 9 years of industry experience in developing, architecting, ting, and deploying enterprise-level mobile technological product and solutions for Windows mobile, J2ME, Android, and iosbased devices while working in some top technology companies in the domain of Telecom, Gaming, Mobile content solutions, and Education technology. Pradeep started his software carrier writing Mobile apps for Pocket PC 2003 (early version of windows mobile) in the early days of evolution of smart phones. He then progressed to Android and ios programming for handled devices. He also provided consulting to some top technology companies like Lionbridge Inc. and Microsoft Learning. Currently, he is a Ph.D. researcher in the field of mobility and a Technical Manager with a technology company, where he is leading a team in designing and developing cutting edge enterprise mobile products for mobile phones as well as tablets. DREAM

5 Contents at a Glance Introduction... Chapter 1: Getting an Overview of Android... 1 Chapter 2: Working with the Activities and Intents in Android Chapter 3: Working with the User Interface Using Views and ViewGroups Chapter 4: Handling Pictures and Menus with Views Chapter 5: Storing the Data a Persistently Chapter 6: Networking and ing in Android Chapter 7: Working with Location on Services and Maps Chapter 8: Working with Graphics and Animation Chapter 9: Audio, Video, and Using the Camera Chapter 10: Thread and Services Chapter 11: Bluetooth, NFC, and Wi-Fi Chapter 12: Telephony and SMS Chapter 13: Hardware Sensors Chapter 14: Widgets and Live Wallpapers in Android Chapter 15: Developing NDK Applications...461

6 Contents at a Glance Chapter 16: Developing, Monetizing, Promoting, and Publishing Android Applications Glossary Index... Online Resource Available with the Book... Bonus Chapters Available with the Book Appendix A: Fundamentals of Java for Android Application Development Appendix B: Getting Started with Android Studio New IDE for Development by Google Appendix C: Introducing Tasker vi

7 Introduction..... xv Chapter 1: Getting an Overview of Android... 1 Introducing Android... 2 Listing the Version History of Android Platform... 2 Discussing Android APIs... 3 Describing the Android Architecture... 4 Application Framework... 5 Exploring the Features of Android... 6 Discussing about Android Applications... 6 The Application Components nts... 6 The Manifest File... 7 Downloading and Installing Android... 7 Downloading and Installing the Android SDK... 7 Setting up Android Virtual Device Setting up Android d Physical Device Exploring the Development ent Environment nm The Java Perspective Using Eclipse The DDMS Perspective The Command-Line Tools Developing and Executing the First Android Application Using Eclipse IDE to Create an Application Running Your Application Exploring the Application Using Command-Line Tools Summary Quick Revise Chapter 2: Using Activities, Fragments, and Intents in Android Working with Activities Creating an Activity... 32

8 Starting an Activity Managing the Lifecycle of an Activity Applying Themes and Styles to an Activity Displaying a Dialog in the Activity Hiding the Title of the Activity Using Intents Exploring Intent Objects Exploring Intent Resolution Exploring Intent Filters Resolving Intent Filter Collision Linking the Activities Using Intent Obtaining Results from Intent Passing Data Using an Intent Object Fragments Fragment Implementation Finding Fragments Adding, Removing, and Replacing Fragments Finding Activity Using Fragment Using the Intent Object to Invoke Built-in in Application Summary Quick Revise Chapter 3: Working with the User Interface Using Views and ViewGroups Working with View Groups The LinearLayout Layout The RelativeLayout ayout Layout The ScrollView Layout The TableLayout Layout The FrameLayout Layout The TabLayout Using the Action Bar Working with Views Using the TextView Using the EditText View Using the Button View Using the RadioButton View Using the CheckBox View Using the ImageButton View Using the ToggleButton View Using the RatingBar View Binding Data with the AdapterView Class Using the ListView Class

9 Using the Spinner Using the Gallery View Designing the AutoTextCompleteView Implementing Screen Orientation Anchoring the Views of the Current Activity Customizing the Size and Position of the Views Designing the Views Programmatically Handling UI Events Handling User Interaction with Activities Handling User Interaction with the Views Specialized Fragments ListFragment DialogFragment PreferenceFragment Creating Menus The Options Menu The Context Menu The SubMenus Summary Quick Revise Chapter 4: Handling Pictures and Menus with Views Working with Image Views Displaying Images in the Gallery View Displaying Images in the Grid View Using the ImageSwitcher e View Designing Context Menu for Image View Using the AnalogClock and DigitalClock Views COP PYRIGHT Embedding Web Browser in an Activity Notifying the User Creating the Toast Notification Creating the Status Bar Notification Creating the Dialog Notification Summary Quick Revise Chapter 5: Storing the Data Persistently Introducing the Data Storage Options Using Preferences Using the Internal Storage Exploring the Methods Used for Internal Storage x

10 Developing an Application to Save User Data Persistently in File Using the External Storage Exploring the Methods Used for External Storage Developing Application to Save File in SD Card Using the SQLite Database Creating the Database Helper Class Creating the Layout and Main Activity Class Creating the Layout and Activity for the Insert Operation Creating the Layout and Activity to Search a Record Creating the Activity Class to Fetch All Records Creating the Layout and Activity for the Update Operation Creating the Layout and Activity for the Delete Operation Executing the Database Operations Working with Content Providers Exploring the android.provider Package Creating User-Defined Content Provider Consuming User-Defined Content Provider Summary Quick Revise Chapter 6: ing and Networking in Android Building an Application to Send Networking in Android Getting an Overview of Networking Fundamentals Checking Network Availability Accessing Web Services Using HTTP Post Accessing Web Services Using the GET Method Working with Binary Data a and Text Files Consuming JSON Services es Sockets Programming Summary Quick Revise Chapter 7: Working with Location Services and Maps x Working with Google Maps Exploring Google Maps External Library Creating an Application Using Google Maps Android API Disabling the Zoom Control Button Changing the Map Type Displaying the Specific Location and Adding Markers Handling Map Gestures Interaction

11 Getting the Current Location of a User Working with Geocoding and Reverse Geocoding Summary Quick Revise Chapter 8: Working with Graphics and Animation Working with Graphics Drawing Graphics to Canvas Using the Drawable Object Referencing an Image File Defining Drawable in XML Using the ShapeDrawable Object Working with the NinePatchDrawable Graphics Understanding the Concept of Hardware Acceleration Working with Animations The Property Animation View Animation Drawable Animation Summary Quick Revise Chapter 9: Audio, Video, and Camera Role of Media Playback Using Media Player Media Formats Supported by Media Player Preparing Audio for Playback ack Preparing Video for Playback ack Creating Application to Play Audio and Video Using MediaPlayer Recording and Playing Sound Use of Media Store Audio Recording Application Creating a Sound Pool Using Camera for Taking Pictures Recording Video Creating Video Recording Application Summary Quick Revise xi

12 Chapter 10: Threads and Services Introducing Threads Worker Threads Using AsyncTask Introducing Services Exploring Services Essentials Understanding the Lifecycle of a Service Exploring the Service Class Introducing the Service Class Creating a Bound Service Summary Quick Revise Chapter 11: Bluetooth, NFC, and Wi-Fi Working with Bluetooth Exploring the Android Bluetooth APIs Permissions Required to Access Bluetooth Setting Up the Bluetooth for an Application Identifying the Bluetooth-Enabled Devices Querying the Paired Devices Discovering Devices Creating an Application Using Bluetooth Functionality Connecting the Devices Using Bluetooth th for Data Transfer Connecting as a Server Connecting as a Client Working with Bluetooth Low Energy Working with NFC Exploring the Basics of NFC C Developing an Application Using NFC Working with Wi-Fi Exploring the Wi-Fi APIs Creating an Application Using Wi-Fi Summary Quick Revise Chapter 12: Telephony and SMS Handling Telephony Displaying Phone Information Application Receiving Phone Calls Application xi

13 Making Outgoing Phone Calls Application Handling SMS Sending SMS Using SmsManager Sending SMS Using Intent Receiving SMS Using the BroadcastReceiver Object Role of Default SMS Providers Summary Quick Revise Chapter 13: Hardware Sensors Introducing Sensors Exploring the Sensor Framework Managing Various Sensor Configurations Understanding the Sensor Coordinate System Using Sensors Summary Quick Revise Chapter 14: Widgets and Live Wallpapers apers in Android Home Screen Widgets Adding the Broadcast Receiver Class to an Android d Manifest Using the RemoteViews and AppWidgetManager ger Classes Creating a Customized Clock Widget Collection View Widgets Collection View Widget Layouts Creating the Remote Views Service Class Creating a Remote Views Factory Interface Populating Collection View Widgets Live Wallpaper Creating Live Wallpaper Resource and Service Configuring Wallpaper Service Creating Live Wallpaper Application Summary Quick Revise Chapter 15: Working with NDK Introducing NDK When to Use NDK? Benefits of NDK Communication between Java and Native Code Installing the NDK x

14 Installing C/C++ Support on Eclipse Installing NDK Plugin through ADT Installing Cygwin Installing Android NDK Configuring Eclipse for NDK Programming Setting the Environment Variable Building the Basic NDK Application Summary Quick Revise Chapter 16: Implementing JBoss Seam Signing the Android Application Exploring the Strategies for Signing the Application Obtaining the Appropriate Private Key Preparing the Application for Release Aligning the APK Package Signing and Aligning APK Using the Eclipse IDE Versioning the Android Application Setting the Application Version Specifying API Requirements of an Android Application Publishing the Android Application ion Releasing Applications on Google ogle Play Releasing Applications through Releasing Applications through a Website Monetizing Applications Monetizing an Application through Advertising Platform Integrating the Google ogle AdMob SDK with an Application Summary CO OPYRIGHT Quick Revise Glossary Index... Online Resource Available with the Book... Bonus Chapters Available with the Book Appendix A: Fundamentals of Java for Android Application Development Appendix B: Getting Started with Android Studio New IDE for Development by Google Appendix C: Introducing Tasker x v